/**
 * History Display Configuration (Issue #701)
 *
 * Single Source of Truth for the history display limit options used by:
 * - GET /api/worktrees/:id/messages (upper-bound validation)
 * - HistoryPane selector UI (selectable options)
 * - WorktreeDetailRefactored state (persisted to localStorage)
 *
 * Design decisions:
 * - MAX_MESSAGES_LIMIT is derived from HISTORY_DISPLAY_LIMIT_OPTIONS (no duplication).
 * - DEFAULT_MESSAGES_LIMIT (50) matches the historical default before this issue.
 * - Storage key uses the `commandmate:` namespace, matching other keys
 *   (e.g. `commandmate:showArchived`).
 */
/**
 * Selectable history display limit options (ascending).
 * The first entry is the historical default; the last entry is the maximum.
 *
 * Issue #1123: the 250 ceiling was a performance mitigation for the previously
 * flat-rendered HistoryPane. Now that the list is virtualized (render cost is
 * O(visible rows), not O(total)), the ceiling is relaxed to 1000. The API still
 * bounds the *fetch* by the maximum option (data volume); server-side paging is
 * tracked separately.
 */
export declare const HISTORY_DISPLAY_LIMIT_OPTIONS: readonly [50, 100, 150, 200, 250, 500, 1000];
/**
 * Union type representing any selectable history display limit.
 */
export type HistoryDisplayLimit = (typeof HISTORY_DISPLAY_LIMIT_OPTIONS)[number];
/**
 * Upper bound enforced by the API, derived from the maximum option.
 *
 * Typed as `HistoryDisplayLimit` (not a brittle `as 250` literal) so that
 * extending `HISTORY_DISPLAY_LIMIT_OPTIONS` does not require touching this line.
 */
export declare const MAX_MESSAGES_LIMIT: HistoryDisplayLimit;
/**
 * Default history display limit (used when no localStorage value is present).
 */
export declare const DEFAULT_MESSAGES_LIMIT: HistoryDisplayLimit;
/**
 * localStorage key used to persist the user-selected history display limit.
 */
export declare const HISTORY_DISPLAY_LIMIT_STORAGE_KEY = "commandmate:historyDisplayLimit";
/**
 * Type guard: returns true if `value` is one of the allowed limit options.
 *
 * Used when reading from localStorage (which may contain stale/corrupted data)
 * to safely narrow `number` to `HistoryDisplayLimit`.
 */
export declare function isHistoryDisplayLimit(value: number): value is HistoryDisplayLimit;
/**
 * localStorage key used to persist the HistoryPane "User only" filter toggle
 * (Issue #725).
 *
 * Value representation: `'true'` / `'false'` (string), matching the existing
 * `commandmate:showArchived` convention. Any other value (including legacy
 * `'1'`/`'0'` or missing) is treated as `false` (safe-off fallback).
 */
export declare const HISTORY_USER_ONLY_STORAGE_KEY = "commandmate:historyUserOnly";
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